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Acetyl carnitine

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https://www.readbyqxmd.com/read/28324172/enzymes-involved-in-branched-chain-amino-acid-metabolism-in-humans
#1
REVIEW
María M Adeva-Andany, Laura López-Maside, Cristóbal Donapetry-García, Carlos Fernández-Fernández, Cristina Sixto-Leal
Branched-chain amino acids (leucine, isoleucine and valine) are structurally related to branched-chain fatty acids. Leucine is 2-amino-4-methyl-pentanoic acid, isoleucine is 2-amino-3-methyl-pentanoic acid, and valine is 2-amino-3-methyl-butanoic acid. Similar to fatty acid oxidation, leucine and isoleucine produce acetyl-coA. Additionally, leucine generates acetoacetate and isoleucine yields propionyl-coA. Valine oxidation produces propionyl-coA, which is converted into methylmalonyl-coA and succinyl-coA. Branched-chain aminotransferase catalyzes the first reaction in the catabolic pathway of branched-chain amino acids, a reversible transamination that converts branched-chain amino acids into branched-chain ketoacids...
March 21, 2017: Amino Acids
https://www.readbyqxmd.com/read/28321934/multi-layered-control-of-peroxisomal-activity-upon-salt-stress-in-saccharomyces-cerevisiae
#2
Sara Manzanares-Estreder, Joan Espí-Bardisa, Benito Alarcón, Amparo Pascual-Ahuir, Markus Proft
Peroxisomes are dynamic organelles and the sole location for fatty acid β-oxidation in yeast cells. Here we report that peroxisomal function is crucial for the adaptation to salt stress, especially upon sugar limitation. Upon stress, multiple layers of control regulate the activity and the number of peroxisomes. Activated Hog1 MAP kinase triggers the induction of genes encoding enzymes for fatty acid activation, peroxisomal import and β-oxidation through the Adr1 transcriptional activator, which transiently associates with genes encoding fatty acid metabolic enzymes in a stress- and Hog1-dependent manner...
March 21, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28292742/fatty-acid-synthesis-intermediates-represent-novel-noninvasive-biomarkers-of-prostate-cancer-chemoprevention-by-phenethyl-isothiocyanate
#3
Krishna B Singh, Shivendra V Singh
Increased de novo synthesis of fatty acids is a distinctive feature of prostate cancer, which continues to be a leading cause of cancer-related deaths among American men. Therefore, inhibition of de novo fatty acid synthesis represents an attractive strategy for chemoprevention of prostate cancer. We have shown previously that dietary feeding of phenethyl isothiocyanate (PEITC), a phytochemical derived from edible cruciferous vegetables such as watercress, inhibits incidence and burden of poorly-differentiated prostate cancer in Transgenic Adenocarcinoma of Mouse Prostate (TRAMP) model...
March 14, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28266085/branched-chain-amino-acid-ratios-in-low-protein-diets-regulate-the-free-amino-acid-profile-and-the-expression-of-hepatic-fatty-acid-metabolism-related-genes-in-growing-pigs
#4
Y H Duan, F N Li, C Y Wen, W L Wang, Q P Guo, Y H Li, Y L Yin
Liver metabolism is affected by nutrients. The aim of this study was to explore the effects of low-protein diets (17% crude protein, CP) supplemented with branched-chain amino acids (BCAAs), including leucine (Leu), isoleucine (Ile) and valine (Val), on hepatic amino acid profile and lipid metabolism in growing pigs. The ratio of Leu : Ile : Val in all groups was 1 : 0.51 : 0.63 (20% crude protein, CP), 1 : 1 : 1 (17% CP), 1 : 0.75 : 0.75 (17% CP), 1 : 0.51 : 0.63 (17% CP) and 1 : 0.25 : 0...
March 6, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28262191/protective-effect-of-acetyl-l-carnitine-against-doxorubicin-induced-cardiotoxicity-in-wistar-albino-rats
#5
Hatice Adiguzel Dundar, Muge Kiray, Mustafa Kir, Efsun Kolatan, Alper Bagriyanik, Zekiye Altun, Safiye Aktas, Hulya Ellidokuz, Osman Yilmaz, Kamer Mutafoglu, Nur Olgun
BACKGROUND AND AIMS: Anthracyclines are one of the most preferred agents in practical pediatric oncology despite their dose-dependent cardiotoxic effects. The aim of this study was to investigate whether or not acetyl-L-carnitine (ALCAR) has protective effects on doxorubicin (DOX)-induced cardiotoxicity. METHODS: Wistar rats were divided into four groups; control, DOX, ALCAR and ALCAR+DOX. Rats in the first group were given saline on study days, whereas those in the second group were given a single dose of DOX on the 5(th) day and saline on the other days...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28226317/neuroprotective-effects-of-acetyl-l-carnitine-on-neonatal-hypoxia-ischemia-induced-brain-injury-in-rats
#6
Shiyu Tang, Su Xu, Xin Lu, Rao P Gullapalli, Mary C McKenna, Jaylyn Waddell
Perinatal hypoxia ischemia (HI) is a significant cause of brain injury in surviving infants. Although hypothermia improves outcomes in some infants, additional therapies are needed since about 40% of infants still have a poor outcome. Acetyl-L-carnitine (ALCAR), an acetylated derivative of L-carnitine, protected against early changes in brain metabolites and mitochondrial function after HI on postnatal day (PND) 7 in a rat pup model of near-term HI injury. However, its efficacy in long-term structural and functional outcomes remains unexplored...
2016: Developmental Neuroscience
https://www.readbyqxmd.com/read/28212191/endothelial-cell-metabolism-an-update-anno-2017
#7
Laure-Anne Teuwen, Nihed Draoui, Charlotte Dubois, Peter Carmeliet
PURPOSE OF REVIEW: Endothelial cell metabolism has recently emerged as an important coregulator of angiogenesis and is therefore a promising new target in various angiogenesis-associated illnesses, like cancer. In this review, we discuss recent insights in endothelial cell metabolism in both physiological and pathological conditions and discuss possible translational implications. RECENT FINDINGS: Two metabolic pathways that determine the performance of endothelial cells are glycolysis and fatty acid oxidation (FAO)...
February 15, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28199883/acetyl-l-carnitine-protects-dopaminergic-nigrostriatal-pathway-in-6-hydroxydopamine-induced-model-of-parkinson-s-disease-in-the-rat
#8
Siamak Afshin-Majd, Keyhan Bashiri, Zahra Kiasalari, Tourandokht Baluchnejadmojarad, Reza Sedaghat, Mehrdad Roghani
Parkinson's disease (PD) is a movement disorder and the second most common neurodegenerative disease worldwide in which nigrostriatal dopaminergic neurons within substantia nigra pars compacta (SNC) are lost, with clinical motor and non-motor symptoms including bradykinesia, resting tremor, rigidity, stooping posture and cognitive deficits. This study was undertaken to evaluate the neuroprotective potential of acetyl-l-carnitine (ALC) against unilateral striatal 6-hydroxydopamine (6-OHDA)-induced model of PD and to explore some involved mechanisms...
February 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28180063/carnitine-acetyltransferase-crat-expression-in-macrophages-is-dispensable-for-nutrient-stress-sensing-and-inflammation
#9
Emily L Goldberg, Vishwa Deep Dixit
OBJECTIVE: Fatty acid oxidation in macrophages is thought to regulate inflammatory status and insulin-sensitivity. An important unanswered question in this field is whether carnitine acetyl-transferase (CrAT) that regulates fatty acid oxidation and mitochondrial acetyl-CoA balance is required to integrate nutrient stress sensing to inflammatory response in macrophages. METHODS: Mice with myeloid lineage-specific Crat deletion were subjected to several metabolic stressors, including high-fat diet-induced obesity, fasting, and LPS-induced endotoxemia...
February 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28163216/possible-promoting-effects-of-melatonin-leptin-and-alcar-on-regeneration-of-the-sciatic-nerve
#10
Mehmet Emin Onger, Suleyman Kaplan, Ömür Gülsüm Deniz, Gamze Altun, Berrin Zuhal Altunkaynak, Kemal Balcı, Stefania Raimondo, Stefano Geuna
Peripheral nerve injury is a widespread and disabling condition that can impair the individual's daily life. Studies involving medications that may positively affect peripheral nerve regeneration are rare. The aim of this study was to investigate new treatments after peripheral nerve injury using various neuroprotectants, melatonin, alcar and leptin, in the regenerative process in an experimental rat model. Wistar albino rats were randomly divided into eight groups containing equal number of animals. Intraperitoneal injection of melatonin (50mg/kg, for 21days), leptin (1mg/kg, for 21days) and acetyl-l-carnitine (50mg/kg, for six weeks) was performed postoperatively...
February 3, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28159823/serum-acylcarnitines-and-risk-of-cardiovascular-death-and-acute-myocardial-infarction-in-patients-with-stable-angina-pectoris
#11
Elin Strand, Eva R Pedersen, Gard F T Svingen, Thomas Olsen, Bodil Bjørndal, Therese Karlsson, Jutta Dierkes, Pål R Njølstad, Gunnar Mellgren, Grethe S Tell, Rolf K Berge, Asbjørn Svardal, Ottar Nygård
BACKGROUND: Excess levels of serum acylcarnitines, which are intermediate products in metabolism, have been observed in metabolic diseases such as type 2 diabetes mellitus. However, it is not known whether acylcarnitines may prospectively predict risk of cardiovascular death or acute myocardial infarction in patients with stable angina pectoris. METHODS AND RESULTS: This study included 4164 patients (median age, 62 years; 72% men). Baseline serum acetyl-, octanoyl-, palmitoyl-, propionyl-, and (iso)valerylcarnitine were measured using liquid chromatography/tandem mass spectrometry...
February 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28115274/toxicity-of-the-amphetamine-metabolites-4-hydroxyamphetamine-and-4-hydroxynorephedrine-in-human-dopaminergic-differentiated-sh-sy5y-cells
#12
R Feio-Azevedo, V M Costa, L M Ferreira, P S Branco, F C Pereira, M L Bastos, F Carvalho, J P Capela
Amphetamine (AMPH) is a psychostimulant used worldwide by millions of patients in the clinical treatment of attention deficit hyperactivity disorder, narcolepsy or even obesity, and is also a drug of abuse. 4-Hydroxynorephedrine (4-OHNE) and 4-hydroxyamphetamine (4-OHAMPH) are two major metabolites known to persist in the brain longer than AMPH. The contribution of AMPH metabolites for its neurotoxicity is undetermined. We evaluated the toxicity of AMPH and its metabolites 4-OHNE and 4-OHAMPH, obtained by chemical synthesis, in human dopaminergic differentiated SH-SY5Y neurons...
March 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28105133/a-prospective-study-to-evaluate-the-efficacy-and-safety-of-oral-acetyl-l-carnitine-for-the-treatment-of-chemotherapy-induced-peripheral-neuropathy
#13
Yuanjue Sun, Yongqian Shu, Baorui Liu, Ping Liu, Changping Wu, Rongsheng Zheng, Xiaohua Zhang, Zhixiang Zhuang, Yongchuan Deng, Leizhen Zheng, Qing Xu, Bin Jiang, Xuenong Ouyang, Jianfei Gao, Nong Xu, Xiaoyi Li, Su Jiang, Chaofan Liang, Yang Yao
The present study aimed to evaluate the efficacy and safety of acetyl-L-carnitine (ALC) for the treatment of chemotherapy-induced peripheral neuropathy (CIPN). The study was carried out as a prospective, randomized, double-blind, placebo-controlled and paralleled clinical study. A total of 239 patients with CIPN were selected as the study subjects. Of the 239 subjects, 118 subjects received 3 g/day ALC orally for 8 weeks and 121 received a placebo. The primary endpoint was improvement of peripheral neuropathy by at least one grade...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101459/venlafaxine-induced-cytotoxicity-towards-isolated-rat-hepatocytes-involves-oxidative-stress-and-mitochondrial-lysosomal-dysfunction
#14
Elham Ahmadian, Hossein Babaei, Alireza Mohajjel Nayebi, Aziz Eftekhari, Mohammad Ali Eghbal
Purpose: Depression is a public disorder worldwide. Despite the widespread use of venlafaxine in the treatment of depression, it has been associated with the incidence of toxicities. Hence, the goal of the current investigation was to evaluate the mechanisms of venlafaxine-induced cell death in the model of the freshly isolated rat hepatocytes. Methods: Collagenase-perfused rat hepatocytes were treated with venlafaxine and other agents. Cell damage, reactive oxygen species (ROS) formation, lipid peroxidation, mitochondrial membrane potential decline, lysosomal damage, glutathione (GSH) level were analyzed...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28098516/germacrone-attenuates-hyperlipidemia-and-improves-lipid-metabolism-in-high-fat-diet-induced-obese-c57bl-6j-mice
#15
Yuan-Ri Guo, Se-Young Choung
We previously showed that Aster spathulifolius Maxim extract (ASE) reduced body weight gain and serum and liver lipid levels and significantly suppressed serum insulin and leptin concentrations in high-fat diet (HFD)-induced obese rats. Germacrone (GM) was identified as a potent bioactive constituent of ASE. In this study, we hypothesized that GM can attenuate hyperlipidemia by alleviating fatty acid (FA) synthesis/uptake and improve lipid metabolism by stimulating FA β-oxidation in HFD-induced obese C57BL/6J mice...
January 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28088260/korean-chungtaejeon-tea-extract-attenuates-body-weight-gain-in-c57bl-6j-lep-ob-ob-mice-and-regulates-adipogenesis-and-lipolysis-in-3t3-l1-adipocytes
#16
Bhesh Raj Sharma, Dong Wook Kim, Dong Young Rhyu
OBJECTIVE: Traditional Korean Chungtaejeon (CTJ) tea is a type of fermented tea, which has received increasing attention in recent years because of its purported health benefits. The present study was designed to investigate the effect and mechanism of CTJ tea extract on body weight gain using C57BL/6J-Lep ob/ob mice and 3T3-L1 adipocytes, respectively. METHODS: The effects of CTJ on cell viability, lipid accumulation, and expression of protein and mRNA were measured in 3T3-L1 adipocytes by using 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide, oil red O staining, Western blotting, and reverse transcriptase-polymerase chain reaction analyses...
January 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28066832/antioxidant-supplements-and-semen-parameters-an-evidence-based-review
#17
REVIEW
Sedigheh Ahmadi, Reihane Bashiri, Akram Ghadiri-Anari, Azadeh Nadjarzadeh
Many studies have focused on male infertility. There is limited evidence about the influence of nutrition on quality of semen. Approximately, 30-80% of infertility cases are caused by oxidative stress and decreased level of seminal total antioxidant capacity. This study was aimed to review the effects of oral antioxidant supplements on improving major semen parameters such as sperm concentration, motility, morphology, DNA damage, and fertility rate. Data were extracted from PubMed and Google scholar database by using the terms "antioxidant", "multivitamin", "carnitine", "CoQ10", "vitamin C", "vitamin E", "zinc", "folic acid", "N-acetyl cysteine" and "selenium" combined with "male infertility", "semen", and "sperm" to generate a set of relevant citations...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28030573/cation-stress-responsive-transcription-factors-slta-and-crza-regulate-morphogenetic-processes-and-pathogenicity-of-colletotrichum-gloeosporioides
#18
Amit K Dubey, Shiri Barad, Neta Luria, Dilip Kumar, Eduardo A Espeso, Dov B Prusky
Growth of Colletotrichum gloeosporioides in the presence of cation salts NaCl and KCl inhibited fungal growth and anthracnose symptom of colonization. Previous reports indicate that adaptation of Aspergillus nidulans to salt- and osmotic-stress conditions revealed the role of zinc-finger transcription factors SltA and CrzA in cation homeostasis. Homologs of A. nidulans SltA and CrzA were identified in C. gloeosporioides. The C. gloeosporioides CrzA homolog is a 682-amino acid protein, which contains a C2H2 zinc finger DNA-binding domain that is highly conserved among CrzA proteins from yeast and filamentous fungi...
2016: PloS One
https://www.readbyqxmd.com/read/27998490/impact-of-storage-conditions-on-the-urinary-metabolomics-fingerprint
#19
Jérôme Laparre, Zied Kaabia, Mark Mooney, Tom Buckley, Mark Sherry, Bruno Le Bizec, Gaud Dervilly-Pinel
Urine stability during storage is essential in metabolomics to avoid misleading conclusions or erroneous interpretations. Facing the lack of comprehensive studies on urine metabolome stability, the present work performed a follow-up of potential modifications in urinary chemical profile using LC-HRMS on the basis of two parameters: the storage temperature (+4 °C, -20 °C, -80 °C and freeze-dried stored at -80 °C) and the storage duration (5-144 days). Both HILIC and RP chromatographies have been implemented in order to globally monitor the urinary metabolome...
January 25, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27975173/acetyl-l-carnitine-via-upegulating-dopamine-d1-receptor-and-attenuating-microglial-activation-prevents-neuronal-loss-and-improves-memory-functions-in-parkinsonian-rats
#20
Sonu Singh, Akanksha Mishra, Neha Srivastava, Rakesh Shukla, Shubha Shukla
Parkinson's disease is accompanied by nonmotor symptoms including cognitive impairment, which precede the onset of motor symptoms in patients and are regulated by dopamine (DA) receptors and the mesocorticolimbic pathway. The relative contribution of DA receptors and astrocytic glutamate transporter (GLT-1) in cognitive functions is largely unexplored. Similarly, whether microglia-derived increased immune response affects cognitive functions and neuronal survival is not yet understood. We have investigated the effect of acetyl-L-carnitine (ALCAR) on cognitive functions and its possible underlying mechanism of action in 6-hydroxydopamine (6-OHDA)-induced hemiparkinsonian rats...
December 14, 2016: Molecular Neurobiology
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